JP2019170951A - Long object production method - Google Patents

Abstract

To provide a long object production method for producing a long object for an absorbent article, capable of preventing meandering and fluttering of the long object during its production and conveyance.SOLUTION: A production method of a long object for an absorbent article comprises: a cutting step for supplying a long base material sheet which is conveyed in one direction to a space between a slit roll extending in a rotation direction and comprising, on a peripheral face, a plurality of cutter blades arranged at an interval in an axial direction, and an anvil roll arranged while facing the slit roll and cutting the long base material sheet to form, on the base material sheet, a plurality of strips of long cut pieces extending along the conveyance direction and in parallel with one another in a width direction; and a conveyance step for conveying each long cut piece on the base material sheet on which the plurality of strips of long cut pieces are formed, in a state that each long cut piece is stored in one of conveyance groove parts on a conveyance roll having a plurality of the conveyance groove parts extending along a rotation direction on a peripheral face.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a method for producing a long article suitably used for an absorbent article.

  Absorbent articles such as disposable diapers, sanitary napkins, and incontinence pads are generally an aggregate of a number of constituent materials such as a top sheet, a back sheet, and an absorbent body. The manufacturing method of an absorbent article includes various processes, such as processing of each constituent material, the operation | work which combines constituent materials. From the viewpoint of increasing the desired flexibility, breathability and liquid absorbability of the absorbent article, the accuracy of the position where the constituent materials are arranged may be important in the process of combining the constituent materials.

  In Patent Document 1, a tape-like sheet material obtained by slitting a sheet material that is a constituent material of an exterior body is used as separate second sheet materials on the ventral side and the back side while maintaining the position in the width direction at the time of slitting. The manufacturing method of the underpants type wearing article provided with the process of obtaining by laminating | stacking and fixing and obtaining the exterior body continuous member distribute | arranged to an abdominal side part, and the exterior body continuous member distribute | arranged to a back side part is disclosed. It is described in the same document that these tape-like sheet materials can be stably and highly accurately arranged with respect to the second sheet material by being conveyed in combination with a plurality of rolls.

  Further, Patent Document 2 discloses an absorptivity in which water-absorbing polymer particles are dispersed on one surface of a long base portion formed by cutting a base sheet, and the water-absorbing polymer is fixed on the surface. A method for producing a sheet-like article for an absorbent article having a plurality of units is described.

JP2013-094618A JP 2017-070501 A

  However, in the methods of Patent Documents 1 and 2, when slitting a base sheet to make a long product, due to an increase in the degree of freedom of the base sheet, the long product is manufactured and conveyed. Sometimes it was difficult to prevent meandering and flapping. Also, as in Patent Document 2, when a long object is conveyed downstream and used for a process such as adhesive coating or water-absorbing polymer spraying on the surface, a plurality of rolls having a flat peripheral surface are used. Due to the fact that the substrate sheet is being conveyed, variations in the lengthy materials during the conveyance of the substrate sheet, flapping of the substrate sheet itself, etc. are likely to occur, and it cannot be supplied with high positional accuracy to the subsequent processes. There was a possibility.

  Therefore, the subject of this invention is providing the manufacturing method of the elongate thing which can eliminate the fault which the prior art mentioned above has.

The present invention includes a slit roll having a plurality of cutter blades extending along the rotation direction and spaced apart in the axial direction on the peripheral surface, and an anvil roll arranged to face the slit roll. In the meantime, by supplying and cutting a long substrate sheet conveyed in one direction, a plurality of elongated sheets extending along the conveyance direction and parallel to the substrate in the width direction are supplied to the substrate sheet. A cutting step for forming a cut piece;
In each conveyance groove part in a conveyance roll which has a plurality of conveyance groove parts which extend along a rotation direction in each circumference long cut piece in the above-mentioned base material sheet in which a plurality of above-mentioned long cut pieces were formed in each circumference The manufacturing method of the elongate thing for absorbent articles which has the conveyance process conveyed in the accommodated state is provided.

  According to the present invention, it is possible to manufacture a long object while preventing meandering and flapping at the time of manufacture and transportation.

FIG. 1 is a schematic side view showing an embodiment of an apparatus for producing a long product. FIG. 2 is a schematic perspective view of the manufacturing apparatus shown in FIG. FIG. 3 is an enlarged view of a main part of the base material sheet cutting part immediately after forming the long cut piece in the manufacturing apparatus shown in FIG. 1. FIG. 4 is an enlarged view of a main part in a state where a long cut piece is conveyed by a conveying roll. FIG. 5 is a schematic perspective view showing another embodiment of the apparatus for manufacturing a long product. Fig.6 (a) is a principal part enlarged view which shows the positional relationship of the slit roll and anvil roll before forming the elongate cut piece in the manufacturing apparatus shown in FIG. 5, FIG.6 (b) is FIG. FIG. 6C is an enlarged view of a main part showing the positional relationship between the slit roll and the anvil roll after forming the long cut piece in the manufacturing apparatus shown in FIG. It is a principal part enlarged view which shows this embodiment. FIG. 7: is a schematic side view which shows another one Embodiment of the manufacturing apparatus of a elongate thing. Fig.8 (a) is a principal part enlarged view which shows the positional relationship of the pattern roll before receiving the adhesive agent in the manufacturing apparatus shown in FIG. 7, and a receiving roll, FIG.8 (b) is shown in FIG. It is a principal part enlarged view which shows the positional relationship of the pattern roll at the time of applying the adhesive agent in a manufacturing apparatus, and a receiving roll, FIG.8 (c) applied the adhesive agent in the manufacturing apparatus shown in FIG. It is a principal part enlarged view which shows the positional relationship of a subsequent pattern roll and a receiving roll, and FIG.8 (d) is a principal part enlarged view which shows other embodiment of the pattern roll and receiving roll in FIG.8 (b). .

  The present invention will be described below based on preferred embodiments with reference to the drawings. FIG. 1 schematically shows an embodiment (first embodiment) of a manufacturing apparatus 10 that is preferably used in the method for manufacturing a long product of the present invention. In the following description, the conveyance direction X of the base sheet 2 and the rotation direction of each roll refer to the same direction (longitudinal direction), and the “width direction” or “axial direction” refers to the conveyance direction of the base sheet 2. A direction perpendicular to X (Y direction) is indicated.

  The manufacturing apparatus 10 illustrated in FIG. 1 includes a base sheet cutting unit 20 and a transport roll 30 in this order from the upstream side to the downstream side of the manufacturing process.

  The base material sheet cutting unit 20 cuts the long base material sheet 2 conveyed from an original fabric roll (not shown) to form a plurality of long cut pieces 2A, And an anvil roll 22 arranged to face the slit roll 21. The slit roll 21 and the anvil roll 22 are arranged in parallel so that their peripheral surfaces face each other and a predetermined amount of clearance is generated.

  Specifically, as shown in FIGS. 2 and 3, the base sheet cutting unit 20 includes a slit roll 21 in which a plurality of cutter blades 21 a are arranged on a peripheral surface, and an anvil roll 22 having a flat peripheral surface. I have. The plurality of cutter blades 21 a, 21 a... Arranged on the slit roll 21 extend along the rotation direction of the slit roll 21 and are arranged side by side with an interval in the axial direction Y of the slit roll 21. In the slit roll 21, the interval between the cutter blades 21 a adjacent in the axial direction Y substantially corresponds to the width of the long cut piece 2 </ b> A formed on the base sheet 2. More precisely, the base sheet 2 can be cut in a state of being contracted in the width direction Y (extended in the transport direction X) by the tension applied during the transport of the base sheet 2. For this reason, the width | variety of the elongate cutting piece 2A in the state from which tension | tensile_strength is no longer provided may be large compared with the space | interval of cutter blade 21a, 21a ....

  The conveyance roll 30 located in the downstream of the base material sheet cutting part 20 is a part which conveys the base material sheet 2 in which multiple long cut pieces 2A were formed. As shown in FIGS. 2 and 4, a plurality of conveyance groove portions 30 b extending along the rotation direction are formed on the peripheral surface of the conveyance roll 30. Between the conveyance groove parts 30b and 30b, the protruding item | line part 30a extended along the rotation direction and protruded rather than the conveyance groove part 30b is distribute | arranged. In FIG.1 and FIG.2, although the conveyance roll 30 is distribute | arranged independently, you may arrange | position the some conveyance roll 30 in series along a conveyance direction as needed.

  Although the above description was the description regarding the manufacturing apparatus 10 in 1st Embodiment, the manufacturing method of the elongate thing using the manufacturing apparatus 10 is demonstrated below. The manufacturing method in this embodiment is divided roughly into two processes, the cutting process which cut | disconnects the base material sheet 2, and forms the elongate cutting piece 2A, and the conveyance process which conveys the elongate cutting piece 2A. . Hereinafter, each process will be described.

<Cutting process>
First, as shown in FIGS. 1 and 2, the long base sheet 2 is supplied between the slit roll 21 and the anvil roll 22 in the base sheet cutting part 20. The base sheet 2 supplied between the slit roll 21 and the anvil roll 22 is cut by a plurality of cutter blades 21 a arranged on the slit roll 21 while being conveyed in the conveyance direction X. Accordingly, as shown in FIGS. 2 and 3, as the base sheet 2 is transported downstream, one surface of the base sheet 2 extends along the transport direction X and is spaced in the width direction Y. A plurality of cut portions 2a through which the other surface penetrates are formed. By forming the cutting part 2a in the base material sheet 2, a plurality of elongated cut pieces 2A extending along the transport direction X of the base material sheet 2 and juxtaposed in the width direction Y are formed. Since the long cut piece 2A is formed by cutting the base sheet 2, the long cut piece 2A and the base sheet 2 are substantially the same.

<Conveying process>
Next, as shown in FIGS. 2 and 4, the base material sheet 2 on which a plurality of elongated cut pieces 2 </ b> A are formed is transported in a transport direction via a transport roll 30 positioned downstream of the base material sheet cutting unit 20. Convey along X. The conveyance roll 30 has a plurality of conveyance groove portions 30b extending along the rotation direction on the peripheral surface thereof. Since the width in the axial direction Y of the conveying groove 30b is formed so as to be equal to or wider than the width of each long cut piece 2A in the width direction Y of the base sheet 2, each length Each of the cut pieces 2A can be transported in a state of being accommodated in each transport groove 30b. That is, one long cut piece 2A is stored in one transport groove 30b. Through these steps, a long product for absorbent articles can be manufactured. The long product manufactured in the present embodiment is one in which the long cut piece 2A is housed and transported in the transport groove 30b, so that the long cut piece 2A and the long product are substantially the same. Are identical.

  From the viewpoint of facilitating storing the respective long cut pieces 2A in the respective transport groove portions 30b, the peripheral speed of the anvil roll 22 is set slower than the transport speed of the base sheet 2, and a plurality of long strips are formed. It is preferable to apply tension to the base sheet 2 on which the cut pieces 2A are formed. More specifically, the ratio of the peripheral speed of the anvil roll 22 to the conveyance speed of the base sheet 2 is preferably 0.5 or more, more preferably 0.8 or more, and less than 1. Preferably, it is 0.95 or less. Specifically, the ratio of the peripheral speed of the anvil roll 22 to the conveyance speed of the base sheet 2 is preferably 0.5 or more and less than 1, and more preferably 0.8 or more and 0.95 or less.

  From the same viewpoint, the conveyance speed of the base sheet 2 should be 2 m / s or more on the condition that the ratio of the peripheral speed of the anvil roll 22 to the conveyance speed of the base sheet 2 is within the above range. Preferably, it is 3 m / s or more, more preferably 6 m / s or less, and even more preferably 5 m / s or less. Specifically, the conveyance speed of the base sheet 2 is preferably 2 m / s or more and 6 m / s or less, and more preferably 3 m / s or more and 5 m / s or less.

  From the same viewpoint, the peripheral speed of the anvil roll 22 is preferably 1 m / s or more on the condition that the ratio of the peripheral speed of the anvil roll 22 to the conveyance speed of the base sheet 2 is within the above-mentioned range. 2 m / s or more is more preferable, 6 m / s or less is preferable, and 5 m / s or less is more preferable. Specifically, the peripheral speed of the anvil roll 22 is preferably 1 m / s or more and 6 m / s or less, and more preferably 2 m / s or more and 5 m / s or less.

  Further, from the viewpoint of making it possible to easily store the formed long cut pieces 2A in the respective conveyance groove portions 30b and suppressing meandering and flapping during manufacture and conveyance of the base sheet 2, the conveyance groove portions 30b in the conveyance roll 30 are provided. The depth H1 (see FIG. 4) is preferably 0.01 mm or more and 3 mm or less, and more preferably 0.1 mm or more and 1 mm or less.

  From the same viewpoint, the width W1 (see FIG. 4) in the axial direction Y of the bottom of the conveyance groove 30b of the conveyance roll 30 is preferably 0.1 mm or more and 10 mm or less, and more preferably 1 mm or more and 5 mm or less. .

  Through these steps, a long product for absorbent articles can be manufactured. According to the manufacturing method in the present embodiment, the base sheet 2 on which a plurality of long cut pieces 2A are formed by forming the transport groove 30b on the transport roll 30 is manufactured and transported. The movement in the width direction is limited by the conveying groove 30b, and it is difficult for vertical gaps, overlaps, deflections, and the like between adjacent long cut pieces 2A. As a result, a long article for absorbent articles can be stably produced while preventing meandering and flapping during production and transportation.

  Next, second and third embodiments of the present invention will be described with reference to FIGS. About these embodiments, it explains focusing on a different point from a 1st embodiment, and explanation about a 1st embodiment is suitably applied to a point which is not explained especially. 5 to 8, the same members as those in FIGS. 1 to 4 are denoted by the same reference numerals.

  The manufacturing method of the elongate thing which concerns on 2nd Embodiment shown in FIG.5 and FIG.6 differs in the form of the anvil roll in a base material sheet cutting part from 1st Embodiment. As shown in FIG. 5, the manufacturing apparatus 10 </ b> A that is preferably used in the present embodiment includes a base sheet cutting unit 20 </ b> A and a transport roll 30.

  As shown in FIG. 5, the base material sheet cutting unit 20 </ b> A in the manufacturing apparatus 10 </ b> A includes a slit roll 21 and an anvil roll 22 </ b> A arranged to face the slit roll 21. The anvil roll 22A has a plurality of convex portions 22a and accommodation groove portions 22b extending along the rotation direction on the peripheral surface thereof. The convex portions 22a and the housing groove portions 22b are alternately arranged over the axial direction Y of the anvil roll 22A.

  As shown in FIGS. 5 and 6A to 6C, the plurality of cutter blades 21a, 21a,... Arranged on the slit roll 21 extend along the rotation direction of the slit roll 21, and the slit roll. 21 are arranged side by side at intervals in the axial direction Y. On the other hand, as for the convex part 22a distribute | arranged to 22A of anvil rolls, the space | interval of adjacent convex part 22a corresponds with the space | interval of the cutter blade 21a adjacent to the axial direction Y in the slit roll 21. FIG. And the convex part 22a and the cutter blade 21a are opposingly arranged so that it may correspond in the axial direction Y. FIG. By having such a configuration, each of the long cut pieces 2A formed by cutting the base sheet 2 in the transport direction X by the cutter blade 21a is immediately received from each receiving groove portion of the anvil roll 22A. 22b. As a result, meandering and flapping can be prevented at the time of manufacturing and transporting the long product, and transported to the downstream process more stably.

  As shown in FIG. 6C, the housing groove 22b of the anvil roll 22A in this embodiment is formed so as to gradually decrease from the peripheral surface side of the anvil roll 22A toward the bottom of the housing groove 22b. It may be. By having such a configuration, each of the long cut pieces 2A formed on the base sheet 2 by the cutter blade 21a is accommodated in each accommodating groove 22b of the anvil roll 22A immediately after the formation, and meandering is performed. It can be transported without fluttering.

  Although the above description was the description regarding the manufacturing apparatus 10A in 2nd Embodiment, the manufacturing method of the elongate thing using 10A of manufacturing apparatuses is demonstrated below. As in the first embodiment, the manufacturing method according to the present embodiment includes two steps: a cutting step for forming the long cut piece 2A on the base sheet 2 and a conveying step for carrying the long cut piece 2A. It is divided roughly into. Hereinafter, each process will be described.

  First, as shown in FIG. 5, the elongate base material sheet 2 is supplied between the slit roll 21 and the anvil roll 22A in the base material sheet cutting part 20A. In this embodiment, when supplying the base material sheet 2 to the base material sheet cutting part 20A, as shown in FIG. 6A, the position of the tip of the cutter blade 21a in the slit roll 21 is convex in the anvil roll 22A. It is preferable to carry out under the condition where the position of the portion 22a coincides with the axial direction Y from the viewpoint of stably performing the subsequent steps.

  The base sheet 2 supplied between the slit roll 21 and the anvil roll 22 </ b> A comes into contact with a plurality of cutter blades 21 a disposed on the slit roll 21 while being conveyed in the conveyance direction X. As a result, the base sheet 2 is cut while being transported downstream, whereby a cutting portion 2a is formed in the base sheet 2. As a result, the base sheet 2 extends along the transport direction X of the base sheet 2, and the width direction A plurality of elongated cut pieces 2A arranged in parallel over Y are formed.

  In the present embodiment, the position of the tip of the cutter blade 21a coincides with the position of the convex portion 22a in the anvil roll 22A, and the housing groove 22b is formed in the anvil roll 22A. Moreover, the base material sheet 2 is generally given tension in the transport direction X by a guide roll or the like (not shown). Due to these reasons, as shown in FIG. 6 (b), immediately after cutting the base sheet 2, a plurality of elongated cut pieces 2A are formed on the base sheet 2, and an anvil roll is formed. The convex portion 22a of 22A enters the cut portion 2a, and each long cut piece 2A is accommodated in the receiving groove portion 22b. That is, one long cut piece 2A is stored in one receiving groove 22b. As a result, the base sheet 2 is conveyed downstream in a state in which the elongated cut pieces 2A are formed and at the same time, the meandering and flapping are less likely to occur. In particular, when the receiving groove 22b of the anvil roll 22A has the shape shown in FIG. 6C, each of the long cut pieces 2A can easily be accommodated in the receiving groove 22b, so that each of the long cut pieces can be more stably provided. 2A can be conveyed. Also in this embodiment, since the long cut piece 2A is formed by cutting the base sheet 2, the long cut piece 2A and the base sheet 2 are substantially the same. It is.

  Next, similarly to the first embodiment, the plurality of long cut pieces 2 </ b> A formed on the base sheet 2 are each conveyed in a state of being accommodated in the conveyance groove 30 b in the conveyance roll 30. Through these steps, a long product for absorbent articles can be manufactured. In the long product manufactured in the present embodiment, the long cut piece 2A is transported via the transport groove 30b, so that the long cut piece 2A and the long product are substantially the same. Are the same.

  From the viewpoint of making each long cut piece 2A easily accommodated in each conveyance groove portion 30b, the peripheral speed of the anvil roll 22A with respect to the conveyance speed of the base sheet 2 is similar to the anvil roll 22 in the first embodiment. It is preferable to apply a tension to the base material sheet 2 on which a plurality of elongated cut pieces 2A are formed. The description of the anvil roll 22 in the first embodiment is appropriately applied to the conveyance speed of the base sheet 2, the peripheral speed of the anvil roll 22A, and the ratio thereof.

  From the viewpoint of making it possible to easily store the long cut pieces 2A in the respective housing groove portions 22b and further suppress the meandering and flapping at the time of manufacturing and transporting the base sheet 2, the shaft of the bottom portion of the transport groove portion 30b of the transport roll 30 is used. As shown in FIG. 6B, the width W1 in the direction Y (see FIG. 4) is preferably equal to or greater than the width W2 in the axial direction Y of the bottom of the housing groove 22b of the anvil roll 22A. Specifically, on the condition that the width W1 in the axial direction Y of the bottom of the conveyance groove 30b satisfies the above range, the width W2 of the bottom of the accommodation groove 22b is preferably 0.1 mm or more and 5 mm or less. More preferably, it is 8 mm or more and 2.5 mm or less. From the same viewpoint, the height H2 of the convex portion 22a of the anvil roll 22A is preferably 0.01 mm or more and 3 mm or less, and more preferably 0.1 mm or more and 1 mm or less.

  From the same point of view, the ratio (W1 / W2) of the width W1 of the bottom of the conveyance groove 30b to the width W2 of the bottom of the accommodation groove 22b is 1 or more on condition that the above-described ranges in the width W1 and the width W2 are satisfied. 100 or less is preferable, and 1.2 or more and 6.25 or less is more preferable.

  Through these steps, a long product for absorbent articles in the second embodiment can be manufactured. In particular, in the present embodiment, in addition to the conveyance groove 30b being formed in the conveyance roll 30, the housing groove 22b is formed in the anvil roll 22A, whereby a plurality of elongated cut pieces 2A are formed. The base sheet 2 is restricted in movement in the width direction by the accommodation groove portion 22b at the time of manufacture, and is further restricted in movement in the width direction by both the accommodation groove portion 22b and the conveyance groove portion 30b at the time of conveyance. This is advantageous in that the adjacent long cut pieces 2A are less likely to cause vertical displacement, overlap, deflection, and the like. As a result, it is possible to stably manufacture a long article for absorbent articles while further preventing meandering and flapping during its manufacture and transportation.

  The manufacturing method of the elongate thing which concerns on 3rd Embodiment shown in FIG.7 and FIG.8 differs from 1st Embodiment by the point by which the adhesive agent coating part 40 is further provided in the downstream of the conveyance roll 30 in FIG. Different. As shown in FIG. 7, the manufacturing apparatus 10 </ b> B suitably used in the present embodiment includes a base sheet cutting unit 20, a transport roll 30, and an adhesive coating unit 40 in this order.

  The adhesive application unit 40 is a part that applies an adhesive to one surface of the base sheet 2 on which a plurality of elongated cut pieces 2 </ b> A conveyed by the conveyance roll 30 is formed. As shown in FIG. 7, the adhesive application unit 40 includes a discharge head 41, a pair of adhesive supply rolls 42 and 43, a pattern roll 44, and a receiving roll 45.

  The adhesive application unit 40 includes a discharge head 41 that discharges the adhesive 4 above the base sheet 2. The discharge head 41 is arranged to have a length corresponding to the width direction Y of the base sheet 2. For the discharge head 41, various known discharge devices such as a method of discharging the adhesive supply rolls 42 and 43, which will be described later, can be used without particular limitation.

  The adhesive application unit 40 includes a pair of adhesive supply rolls 42 and 43 that supply the adhesive 4 to the downstream side above the base sheet 2. The pair of adhesive supply rolls 42 and 43 are arranged to have a length corresponding to the width direction Y of the base sheet 2. The pair of adhesive supply rolls 42 and 43 rotate in directions opposite to each other, and the adhesive 4 can be supplied to the pattern roll 44 side by these rotations. The peripheral surface of the adhesive supply roll 43 is in contact with the peripheral surface of the pattern roll 44, and the adhesive 4 can be applied to the peripheral surface of the pattern roll 44.

  The adhesive application unit 40 includes a pattern roll 44 that applies the adhesive 4 to one surface of the base sheet 2, and a receiving roll 45 that is disposed to face the pattern roll 44. The pattern roll 44 and the receiving roll 45 are arranged so as to have a length corresponding to the width direction Y of the base sheet 2. The adhesive supply roll 43 and the pattern roll 44 rotate in opposite directions, and the adhesive 4 is applied to the peripheral surface of the pattern roll 44 via the adhesive supply roll 43. The base sheet 2 on which the plurality of long cut pieces 2A are formed is supplied between the pattern roll 44 and the receiving roll 45, and the base sheet 2 is transported in the transport direction X. Accordingly, the adhesive 4 can be applied onto the base sheet 2.

  From the viewpoint of continuously applying the adhesive 4 on the base sheet 2 on which a plurality of long cut pieces 2A are formed, as shown in FIGS. It is preferable to have a plurality of flanges 44a extending in the axial direction Y on the peripheral surface along the rotation direction. When the pattern roll 44 has the flange portion 44 a, the peripheral surface of the adhesive supply roll 43 is arranged so as to be in contact with the flange portion 44 a of the pattern roll 44.

  From the viewpoint of stably transporting the base sheet 2 formed with the plurality of long cut pieces 2A transported from the transport roll 30 while preventing meandering and flapping, the receiving roll 45 is rotated in the circumferential direction thereof. It is preferable to have a plurality of transfer convex portions 45a and transfer groove portions 45b extending along the axial direction Y alternately. When the transfer convex portion 45a and the transfer groove portion 45b are formed on the receiving roll 45, each transfer groove portion 45b is cut into a long shape from the viewpoint of preventing meandering and flapping of the base sheet 2 when the adhesive 4 is applied. It is preferable that each of the pieces 2A is configured to be accommodated.

  In particular, from the viewpoint of allowing the adhesive 4 to be continuously applied onto the base sheet 2 while stably transporting the long cut pieces 2A, the adjacent transfer groove portions 45b in the receiving roll 45 are provided. Is preferably formed so that the interval between the adjacent flanges 44a in the pattern roll 44 coincides, and in addition, the transfer groove 45b and the flange 44a are arranged so as to be fitted to each other. More preferably. In order for the transfer groove portion 45b and the flange portion 44a to be fitted to each other, as shown in FIGS. 8A to 8D, the width W3 in the axial direction Y of the bottom portion of the transfer groove portion 45b is set to the axis of the flange portion 44a. What is necessary is just to be comprised so that it may become the width W4 or more of the direction Y.

  Next, the manufacturing method of the elongate thing using the said manufacturing apparatus 10B is demonstrated. The manufacturing method in this embodiment performs the cutting process which forms the elongate cutting piece 2A in the base material sheet 2, and the conveyance process which conveys the elongate cutting piece 2A similarly to 1st Embodiment, and after that, Then, a coating step of coating the adhesive 4 on one surface of the long cut piece 2A is performed. Hereinafter, each process will be described. In the following description, the pattern roll 44 is a preferred embodiment of the present embodiment. The pattern roll 44 is formed with a plurality of flanges 44a, and the receiving roll 45 is formed with a transfer protrusion 45a and a transfer groove 45b. This will be explained based on.

  First, similarly to the first embodiment, the long base sheet 2 is supplied between the slit roll 21 and the anvil roll 22 in the base sheet cutting unit 20 and cut, thereby cutting the base sheet. A plurality of elongated cut pieces 2A are formed in 2 (cutting step). Also in this embodiment, the long cut piece 2A and the base sheet 2 are substantially the same.

  Next, similarly to the first embodiment, a plurality of elongated cut pieces 2 </ b> A formed on the base sheet 2 are each conveyed in a state of being accommodated in the conveyance groove 30 b in the conveyance roll 30 (conveying step).

  Subsequently, the adhesive 4 is applied to one surface of the base sheet 2 on which the plurality of elongated cut pieces 2 </ b> A conveyed through the conveyance roll 30 is formed (coating process). In the present embodiment, as shown in FIG. 7, the adhesive 4 discharged from the discharge head 41 is a peripheral surface of the adhesive supply rolls 42 and 43 as the adhesive supply rolls 42 and 43 and the pattern roll 44 rotate. And is continuously applied to the peripheral surface of the pattern roll 44. As shown in FIG. 8 (a), if there are a plurality of flanges 44a on the peripheral surface of the pattern roll 44, the adhesive supply roll 43 and the flanges 44a rotate so as to be in contact with each other. The adhesive 4 present on the peripheral surface of the agent supply roll 43 is continuously applied only to the flanges 44 a of the pattern roll 44.

  The base sheet 2 on which the long cut pieces 2 </ b> A conveyed by the conveyance roll 30 are formed is supplied between the pattern roll 44 and the receiving roll 45. Each long cut piece 2 </ b> A is conveyed in a state of being accommodated in each transfer groove 45 b of the receiving roll 45. Since the pattern roll 44 is rotating, the adhesive 4 is applied to one surface of the substrate sheet 2 to be conveyed while the adhesive 4 is continuously applied to the flanges 44 a of the pattern roll 44.

  As shown in FIGS. 8A to 8D, in the state where the long cut pieces 2A are housed in the respective transfer groove portions 45b of the receiving rolls 45, the width W3 of the bottom portion of each transfer groove portion 45b is as follows. Since it is configured to have a width W4 or more of the flange portion 44a, as the pattern roll 44 and the receiving roll 45 rotate, the flange portions 44a and the transfer groove portions 45b are fitted to each other. Due to this, the adhesive 4 applied to each flange 44a is applied so as to be in contact with the upper surface of the long cut piece 2A (base material sheet 2) accommodated in each transfer groove 45b. Will be. When the pattern roll 44 and the receiving roll 45 are further rotated, as shown in FIG. 8C, each collar portion 44 a has the upper surface of the base sheet 2 with the adhesive 4 applied to the upper surface of the base sheet 2. Get away from.

  From the viewpoint of preventing the leakage of the adhesive 4 from the base material sheet 2 in the width direction Y and performing the apparatus maintenance and the downstream process more simply, as shown in FIGS. The width W3 of the bottom of the transfer groove 45b is preferably set to be equal to or greater than the width W4 of the flange 44a of the pattern roll 44. From the same viewpoint, specifically, the width W3 of the bottom of the transfer groove 45b is preferably 0.1 mm or more and 10 mm or less, and more preferably 1 mm or more and 5 mm or less. Further, the width W4 of the flange portion 44a is preferably 0.1 mm or more and 10 mm or less, more preferably 0.5 mm or more and 2.5 mm or less, provided that the width W4 is W3 or less. By having such a relationship, each flange 44a and each transfer groove 45b can be easily fitted to each other, and the adhesive 4 can be stably applied to the base sheet 2. This is also advantageous.

  From the same point of view, the ratio (W3 / W4) of the width W3 of the bottom of the transfer groove 45b to the width W4 of the flange 44a of the pattern roll 44 is that the width W3 and the width W4 satisfy the above-mentioned range. It is preferably 1 or more and 100 or less, and more preferably 2 or more and 10 or less.

  The depth H3 of the transfer groove 45b is 0. From the viewpoint that the flanges 44a and the transfer grooves 45b can be easily fitted to each other and the adhesive 4 is more stably applied to the base sheet 2. It is preferable to set it as 01 mm or more and 3 mm or less, and it is more preferable to set it as 0.1 mm or more and 1 mm or less. From the same viewpoint, the height H4 of the flange 44a is preferably 0.01 mm or more and 3 mm or less, and more preferably 0.1 mm or more and 1 mm or less.

  Through these steps, the base material sheet 2 on which a plurality of elongated cut pieces 2A are formed can prevent meandering and flapping at the time of manufacture and conveyance, and an adhesive to the base material sheet 2 Thus, it is possible to produce a long product for absorbent articles that has been coated with No. 4. In particular, the pattern roll 44 has the flange portion 44a, and the receiving roll 45 has the transfer convex portion 45a and the transfer groove portion 45b, so that the receiving groove portion 22b and the transfer groove portion 30b are provided when the long cut piece 2A is transferred. Thus, when the adhesive 4 is applied to the long cut piece 2A, the movement of the base sheet 2 in the width direction is limited by the transfer groove 45b. As a result, the long cut pieces 2A can be transported downstream while preventing the long cut pieces 2A from being overlapped and bent, and a long product in which the adhesive 4 is stably applied to the long cut pieces 2A is manufactured. Can do.

  The long product manufactured by each of the above embodiments is formed by a plurality of long cut pieces 2A having the same width along the width direction. The long product manufactured by the manufacturing method of this invention is used suitably as a constituent material of an absorbent article. Absorbent articles are generally used for absorbing and holding excretory body fluids such as urine and menstrual blood. Such absorbent articles include, for example, disposable diapers, sanitary napkins, incontinence pads, etc., but are not limited thereto, and a wide range of articles used for absorbing liquid discharged from the human body. It is included.

  The long product manufactured according to the present invention may be used as it is depending on the form and required performance of the absorbent article to be manufactured, and the long product is cut into each long cut piece 2A. It may be used after being subjected to other processing such as separation, laminating a long product on another sheet, or attaching a functional material such as a water-absorbing polymer. These processes may be performed in a state where the long object is stored in the transport groove 30b of the transport roll 30 and transported, or may be performed in a state where the peripheral surface is guided by another roll having a flat surface. .

  The long product manufactured in the first and second embodiments can be suitably used as a constituent material of an absorbent article such as an exterior body or a surface material. In addition, the long product manufactured in the third embodiment, for example, sprays a water-absorbing polymer on the surface on which the adhesive 4 has been applied in the coating step, and absorbs the water through the adhesive 4. The polymer particles can be suitably used in absorbent articles as a water-absorbing material for absorbing excretory liquid by further performing a step of fixing the polymer particles on the base sheet 2 (polymer dispersion step).

  When performing a polymer dispersion | distribution process, it can carry out by providing the polymer dispersion | distribution part (not shown) which disperse | distributes the particle | grains of a water absorbing polymer in the downstream of the adhesive agent coating part 40 in the manufacturing apparatus 10B. The polymer spraying part is arranged on the downstream side of the adhesive application part 40 and above the long object to be conveyed. The polymer spraying portion is configured to spray water-absorbing polymer particles on one surface on which the long adhesive 4 is coated in the coating step. The dispersed water-absorbing polymer particles are fixed on one surface of the base sheet 2 via the adhesive 4.

  It is preferable that 3 or more and 1000 or less long cut pieces 2A formed on the substrate sheet 2 are arranged along the width direction Y of the substrate sheet 2, and 50 or more and 500 or less are arranged. More preferably. The method of counting the long cut pieces 2A is defined as the number of the long cut pieces 2A intersecting the straight line when the virtual straight line is drawn in the width direction Y of the base sheet 2 to the maximum. .

  The long cut piece 2A formed on the base sheet 2 can be appropriately changed in width in the width direction Y according to the form and required performance of the absorbent article using the long product as a constituent material. it can. From the viewpoint of ease of handling of the base sheet 2 on which the long cut piece 2A is formed, the width in the width direction Y of the long cut piece 2A is preferably 0.1 mm or more and 5 mm or less. More preferably, it is 8 mm or more and 2.5 mm or less. Further, from the viewpoint of stably transporting the long cut piece 2A, the width W2 in the axial direction Y of the housing groove portion 22b in the anvil roll 22A, corresponding to the width of the long cut piece 2A to be manufactured, The width W1 in the axial direction Y of the conveying groove 30b in the roll 30 and the width W4 in the axial direction Y of the transfer groove 45b in the receiving roll 45 are adjusted so that the long cut piece 2A fits in each groove of each roll. A configuration is preferable.

As the base material sheet 2, various sheets configured to include a hydrophilic material and / or a hydrophobic material can be used according to the use of the long product. Examples of the sheet comprising a hydrophilic material include paper, nonwoven fabric, cloth, synthetic sponge formed by foaming synthetic resin, etc. Among them, even if thin, the tensile strength is relatively high, From the viewpoint of being thin and imparting flexibility, a nonwoven fabric is preferably used. These hydrophilic sheets can be used alone or in combination of two or more. As the non-woven fabric, a hydrophilic non-woven fabric containing hydrophilic fibers as constituent fibers, a hydrophilic non-woven fabric containing synthetic fibers imparted with hydrophilicity as constituent fibers, and the like are preferably used. The basis weight of the nonwoven fabric is preferably 5 g / m ² or more and 100 g / m ² or less, more preferably 10 g / m ² or more and 40 g / m ² or less. As the hydrophilic nonwoven fabric, those known in the technical field such as a spunbond nonwoven fabric, a melt blown nonwoven fabric, a spunlace nonwoven fabric, and an air-through nonwoven fabric can be used without particular limitation. As a sheet | seat comprised including a hydrophobic material, the laminate etc. of paper, a nonwoven fabric, or cloth, and a synthetic resin are mentioned, for example.

As the adhesive 4, for example, a hot melt adhesive is preferably used. Examples of the hot melt adhesive include styrene and olefin. Styrene-based hot melt adhesives include styrene-butadiene-styrene copolymer (SBS), styrene-isoprene-styrene copolymer (SIS), and styrene-ethylene-butylene-styrene copolymer that is a hydrogenated product of SBS. (SEBS) and blended hot-melt adhesives in which two or more of these are mixed can be used. Among these, from the viewpoint of easily balancing the tack force and the cohesive force, a blended hot-melt adhesive of SIS and SBS or a blended hot-melt adhesive of SIS and SEBS is preferably used. The coating amount of the hot melt adhesive is preferably 0.5 g / m ² or more and 100 g / m ² or less, more preferably 5 g / m ² or more and 50 g / m ² or less.

  As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment. For example, in each of the embodiments described above, the long object is formed from the long cut piece 2A having the same width, but instead, the long cut piece 2A is formed to have a different width. It may be. The long cut pieces 2A having different widths can be formed by appropriately changing the width of the cutter blade 21a in the slit roll 21, for example.

  Moreover, although 3rd Embodiment demonstrated with the form using the anvil roll 22 with a flat surrounding surface, it may replace with the anvil roll 22 and 22 A of anvil rolls in 2nd Embodiment may be used. When the anvil roll 22A is used in the third embodiment, the long cut piece 2A is formed by the receiving groove portion 22b, and the long cut piece 2A is transferred by the receiving groove portion 22b and the transfer groove portion 30b. When the adhesive 4 is applied to the cut piece 2A, the movement of the base sheet 2 in the width direction is limited by the transfer groove 45b. As a result, in addition to being able to further prevent the overlapping and bending of the long cut pieces 2A and to convey them downstream, a long piece of adhesive 4 coated more stably on the long cut pieces 2A. Can be manufactured.

This invention discloses the manufacturing method and manufacturing apparatus of the elongate thing for the following absorbent articles further regarding embodiment mentioned above.
<1>
Between a slit roll having a plurality of cutter blades extending along the rotational direction and spaced apart in the axial direction on the peripheral surface, and an anvil roll arranged to face the slit roll, By supplying and cutting a long base sheet conveyed in the direction, a plurality of long cut pieces extending along the transport direction and parallel in the width direction are formed on the base sheet. Cutting step to
In each conveyance groove part in a conveyance roll which has a plurality of conveyance groove parts which extend along a rotation direction in each circumference long cut piece in the above-mentioned base material sheet in which a plurality of above-mentioned long cut pieces were formed in each circumference The manufacturing method of the elongate thing for absorbent articles which has the conveyance process conveyed in the state accommodated.

<2>
The manufacturing method of the elongate thing for absorbent articles as described in said <1> which sets ratio of the peripheral speed of the said anvil roll with respect to the conveyance speed of the said base material sheet to 0.5 or more and less than 1.
<3>
The ratio of the peripheral speed of the anvil roll 22 to the conveying speed of the base sheet is preferably 0.5 or more, more preferably 0.8 or more, and preferably less than 1, 0.95 More preferably, the ratio of the peripheral speed of the anvil roll 22 to the conveying speed of the base sheet sheet is preferably 0.5 or more and less than 1, more preferably 0.8 or more and 0.95 or less. The manufacturing method of the elongate thing for the absorbent articles as described in said <1> preferable.
<4>
The conveyance speed of the base sheet is preferably 2 m / s or more, more preferably 3 m / s or more, and preferably 6 m / s or less, more preferably 5 m / s or less. Preferably, the conveyance speed of the base sheet is preferably 2 m / s or more and 6 m / s or less, more preferably 3 m / s or more and 5 m / s or less, described in <2> or <3>. Of manufacturing a long product for absorbent articles.
<5>
The peripheral speed of the anvil roll is preferably 1 m / s or more, more preferably 2 m / s or more, and preferably 6 m / s or less, more preferably 5 m / s or less. The peripheral speed of the anvil roll is preferably 1 m / s or more and 6 m / s or less, more preferably 2 m / s or more and 5 m / s or less, any one of the above items <2> to <4> The manufacturing method of the elongate thing for absorbent articles as described in any one of.

<6>
The depth of the conveyance groove part in the conveyance roll is preferably 0.01 mm or more and 3 mm or less, more preferably 0.1 mm or more and 1 mm or less, according to any one of <1> to <5>. Of manufacturing a long product for absorbent articles.
<7>
Any one of the above items <1> to <6>, wherein the width in the axial direction of the bottom of the conveyance groove in the conveyance roll is preferably 0.1 mm or more and 10 mm or less, more preferably 1 mm or more and 5 mm or less. The manufacturing method of the elongate thing for absorbent articles of 1.
<8>
The anvil roll has a plurality of convex portions and accommodating groove portions extending along the rotation direction on the circumferential surface thereof alternately in the axial direction, and an interval between the adjacent convex portions is adjacent to the cutter in the slit roll. Match the spacing of the blades,
In the cutting step, the base sheet is supplied between the slit roll and the anvil roll under a state in which the position of the cutting edge of the cutter blade matches the position of the convex portion, and a plurality of the long sheets The long shape for absorbent articles according to any one of <1> to <7>, wherein a long cut piece is formed and each long cut piece is housed in the receiving groove portion of the anvil roll. Manufacturing method.
<9>
The width of the accommodation groove portion of the anvil roll is gradually reduced from the peripheral surface side of the anvil roll toward the bottom portion of the accommodation groove portion. Production method.

<10>
The width of the bottom part of the said conveyance groove part of the said conveyance roll is set more than the width | variety of the bottom part of the said accommodation groove part of the said anvil roll, The long article for absorbent articles as described in said <8> or <9> Production method.
<11>
The width of the bottom of the housing groove is preferably 0.1 mm to 5 mm, more preferably 0.8 mm to 2.5 mm,
The length of the convex part of the anvil roll is preferably 0.01 mm or more and 3 mm or less, more preferably 0.1 mm or more and 1 mm or less, and the length for an absorbent article according to the above <10>. A method for producing a product.
<12>
The long for an absorbent article according to any one of <1> to <11>, further including a coating step of coating an adhesive on one surface of the base sheet transported by the transport roll. A method for producing a product.
<13>
In the coating step, using a pattern roll having a plurality of flanges extending in the rotation direction on the peripheral surface in the axial direction, and a receiving roll arranged facing the pattern roll, The base sheet is supplied between the pattern roll and the receiving roll while applying the adhesive to the collar, and the adhesive coated on the collar is applied to one surface of the base sheet The manufacturing method of the elongate thing for absorbent articles as described in said <12> coated on the surface.

<14>
The receiving roll has a plurality of transfer convex portions and transfer groove portions extending along the rotation direction on the circumferential surface thereof alternately in the axial direction, and an interval between the adjacent transfer groove portions is the flange portion of the pattern roll. Matches the interval of
The transfer groove part of the receiving roll and the flange part of the pattern roll are arranged so as to fit each other,
The width of the bottom of the transfer groove of the receiving roll is set to be equal to or greater than the width of the flange of the pattern roll;
In the coating step, the base sheet is supplied between the pattern roll and the receiving roll under a state in which the flange portion of the pattern roll matches the position of the transfer groove, The absorbent article according to <13>, wherein each of the long cut pieces is accommodated in the transfer groove portion, and the adhesive applied to the collar portion is applied to one surface of the base sheet. For producing long objects for use.
<15>
The width W3 of the bottom of the transfer groove is preferably 0.1 mm or more and 10 mm or less, and more preferably 1 mm or more and 5 mm or less. Further, the width W4 of the flange portion is preferably 0.1 mm or more and 10 mm or less, more preferably 0.5 mm or more and 2.5 mm or less, provided that the width W4 is W3 or less. <13> Or the manufacturing method of the elongate thing for absorbent articles of any one of <14>.
<16>
The ratio of the width W3 of the bottom of the transfer groove to the width W4 of the flange of the pattern roll is preferably 1 or more and 100 or less, provided that the width W3 and the width W4 satisfy the above-described range. More preferably, the method for producing a long product for absorbent articles according to <15>.

<17>
The depth H3 of the transfer groove is preferably 0.01 mm to 3 mm, more preferably 0.1 mm to 1 mm, and the height H4 of the flange is 0.01 mm to 3 mm. The method for producing a long article for an absorbent article according to any one of <13> to <16>, preferably 0.1 mm or more and 1 mm or less.
<18>
In the coating step, the method has a polymer spraying step of spraying a water-absorbing polymer on the surface coated with the adhesive and fixing the particles of the water-absorbing polymer on the base sheet through the adhesive. The method for producing a long article for an absorbent article according to any one of <12> to <17>.
<19>
The said base material sheet is a manufacturing method of the elongate thing for absorbent articles of any one of said <1> thru | or <18> in which a nonwoven fabric is used preferably.

<20>
A slit roll having a plurality of cutter blades extending along the rotation direction and spaced apart in the axial direction on the peripheral surface, and an anvil roll arranged to face the slit roll, the slit By supplying and cutting a long base sheet transported in one direction between the roll and the anvil roll, the base sheet extends in the transport direction and is parallel in the width direction. A base sheet cutting part configured to be able to form a plurality of elongated strips,
The circumferential surface has a plurality of conveying groove portions extending along the rotation direction, and each long cut piece in the base sheet on which a plurality of long cut pieces are formed is accommodated in each conveying groove portion. The manufacturing apparatus of the elongate thing for absorbent articles provided with the conveyance roll comprised so that conveyance in a state is possible.
<21>
The long article for absorbent articles according to <20>, wherein the ratio of the peripheral speed of the anvil roll to the conveyance speed of the base sheet is 0.5 or more and less than 1. Manufacturing equipment.
<22>
It is preferable that the ratio of the peripheral speed of the anvil roll 22 to the conveyance speed of the base sheet is 0.5 or more, more preferably 0.8 or more, Moreover, it is preferable that it is comprised so that it may become less than 1, It is more preferable that it is comprised so that it may become 0.95 or less, and ratio of the peripheral speed of the anvil roll 22 with respect to the conveyance speed of the said base material sheet is 0. It is preferably configured to be 5 or more and less than 1, and more preferably configured to be 0.8 or more and 0.95 or less, for the absorbent article according to <20>. Long product manufacturing equipment.
<23>
It is preferable that the conveyance speed of the base sheet is 2 m / s or more, more preferably 3 m / s or more, and 6 m / s or less. Is preferably configured to be 5 m / s or less, and is configured such that the conveyance speed of the base sheet is 2 m / s or more and 6 m / s or less. The apparatus for producing a long article for an absorbent article according to <21> or <22>, which is preferably configured to be 3 m / s or more and 5 m / s or less.
<24>
It is preferable that the anvil roll has a peripheral speed of 1 m / s or more, more preferably 2 m / s or more, and 6 m / s or less. Preferably, it is configured to be 5 m / s or less, and the peripheral speed of the anvil roll is configured to be 1 m / s or more and 6 m / s or less. The production of a long product for absorbent articles according to any one of the above items <21> to <23>, more preferably 2 m / s or more and 5 m / s or less. apparatus.

<25>
It is preferable that the depth of the conveyance groove portion in the conveyance roll is 0.01 mm or more and 3 mm or less, more preferably 0.1 mm or more and 1 mm or less. 20> thru | or <24> any 1 item | term manufacturing apparatus of the elongate thing for absorbent articles.
<26>
It is preferable that the width in the axial direction of the bottom portion of the conveyance groove in the conveyance roll is 0.1 mm or more and 10 mm or less, and more preferably 1 mm or more and 5 mm or less. The manufacturing apparatus of the elongate object for absorbent articles as described in any one of said <20> thru | or <25>.
<27>
The anvil roll has a plurality of convex portions and accommodating groove portions extending along the rotation direction on the circumferential surface thereof alternately in the axial direction, and an interval between the adjacent convex portions is adjacent to the cutter in the slit roll. Match the spacing of the blades,
The base sheet is supplied between the slit roll and the anvil roll under a state in which the position of the cutting edge of the cutter blade coincides with the position of the convex portion to form a plurality of the elongated cut pieces. And the long shape for absorbent articles as described in any one of said <20> thru | or <26> comprised so that each elongate cut piece can each be accommodated in the said accommodation groove part of the said anvil roll. Manufacturing equipment.
<28>
The length for the absorbent article according to <27>, wherein the width of the housing groove portion of the anvil roll is configured to gradually decrease from the peripheral surface side of the anvil roll toward the bottom portion of the housing groove portion. Scale manufacturing equipment.

<29>
The long shape for absorbent articles according to <27> or <28>, wherein the width of the bottom of the transport groove of the transport roll is set to be equal to or greater than the width of the bottom of the housing groove of the anvil roll. Manufacturing equipment.
<30>
Preferably, the width of the bottom of the housing groove is configured to be 0.1 mm or more and 5 mm or less, and more preferably configured to be 0.8 mm or more and 2.5 mm or less,
The height of the convex portion of the anvil roll is preferably configured to be 0.01 mm or more and 3 mm or less, and more preferably configured to be 0.1 mm or more and 1 mm or less. 29> An apparatus for producing a long article for an absorbent article.
<31>
The absorptivity according to any one of <20> to <30>, further including an adhesive application portion for applying an adhesive to one surface of the base sheet conveyed by the conveyance roll. Equipment for manufacturing long objects for articles.
<32>
The adhesive coating part includes a pattern roll having a plurality of flanges extending in the rotation direction on the circumferential surface in the axial direction, and a receiving roll arranged to face the pattern roll, The base sheet is supplied between the pattern roll and the receiving roll while the adhesive is applied to the collar portion of the pattern roll, and the adhesive coated on the collar portion is supplied to the base sheet. The apparatus for producing a long product for absorbent articles according to <31>, wherein the device is configured to be coated on one surface.

<33>
The receiving roll has a plurality of transfer convex portions and transfer groove portions extending along the rotation direction on the circumferential surface thereof alternately in the axial direction, and an interval between the adjacent transfer groove portions is the flange portion of the pattern roll. Matches the interval of
The transfer groove part of the receiving roll and the flange part of the pattern roll are arranged so as to fit each other,
The width of the bottom of the transfer groove of the receiving roll is set to be equal to or greater than the width of the flange of the pattern roll;
The adhesive coating unit supplies the base sheet between the pattern roll and the receiving roll under a state in which the flange portion of the pattern roll matches the position of the transfer groove portion, <32>, wherein the long cut pieces are accommodated in the transfer groove portions, respectively, and the adhesive applied to the collar portion can be applied to one surface of the base sheet. The manufacturing apparatus of the elongate object for absorbent articles as described in any one of.
<34>
The width W3 of the bottom portion of the transfer groove is preferably configured to be 0.1 mm or more and 10 mm or less, and more preferably configured to be 1 mm or more and 5 mm or less. Further, the width W4 of the collar portion is preferably configured to be 0.1 mm or more and 10 mm or less, provided that the width W4 is W3 or less, and is configured to be 0.5 mm or more and 2.5 mm or less. The manufacturing apparatus of the elongate thing for absorbent articles as described in any one of said <32> or <33> which is more preferable.
<35>
The ratio of the width W3 of the bottom of the transfer groove to the width W4 of the flange of the pattern roll is configured to be 1 or more and 100 or less on condition that the width W3 and the width W4 satisfy the above-described range. Preferably, the apparatus for producing an elongated article for absorbent articles according to <34>, more preferably configured to be 2 or more and 10 or less.

<36>
The transfer groove portion depth H3 is preferably configured to be 0.01 mm or more and 3 mm or less, more preferably 0.1 mm or more and 1 mm or less. The height H4 is preferably configured to be not less than 0.01 mm and not more than 3 mm, more preferably not less than 0.1 mm and not more than 1 mm, <32> to <35> The manufacturing apparatus of the elongate object for absorbent articles of any one of these.
<37>
Sprinkling a water-absorbing polymer on the surface coated with the adhesive, and comprising a polymer spraying part for fixing particles of the water-absorbing polymer on the substrate sheet via the adhesive, 31> thru | or the manufacturing apparatus of the elongate thing for absorbent articles any one of <36>.
<38>
The said base material sheet is a manufacturing apparatus of the elongate thing for absorbent articles of any one of said <20> thru | or <37> in which a nonwoven fabric is used preferably.

2 Base material sheet 2A Long cut piece 4 Adhesive 10, 10A, 10B Manufacturing apparatus 20, 20A Base material sheet cutting part 21 Slit roll 22, 22A Anvil roll 30 Conveying roll 30b Conveying groove part 40 Adhesive coating part 44 Pattern Roll 44a ridge portion 45 receiving roll 45a transfer convex portion 45b transfer groove portion X transport direction Y width direction (axial direction)

Claims (8)

Between a slit roll having a plurality of cutter blades extending along the rotational direction and spaced apart in the axial direction on the peripheral surface, and an anvil roll arranged to face the slit roll, By supplying and cutting a long base sheet conveyed in the direction, a plurality of long cut pieces extending along the transport direction and parallel in the width direction are formed on the base sheet. Cutting step to
In each conveyance groove part in a conveyance roll which has a plurality of conveyance groove parts which extend along a rotation direction in each circumference long cut piece in the above-mentioned base material sheet in which a plurality of above-mentioned long cut pieces were formed in each circumference The manufacturing method of the elongate thing for absorbent articles which has the conveyance process conveyed in the state accommodated.   The manufacturing method of the elongate thing for absorbent articles of Claim 1 which makes ratio of the peripheral speed of the said anvil roll with respect to the conveyance speed of the said base material sheet 0.5 or more and less than 1. The anvil roll has a plurality of convex portions and accommodating groove portions extending along the rotation direction on the circumferential surface thereof alternately in the axial direction, and an interval between the adjacent convex portions is adjacent to the cutter in the slit roll. Match the spacing of the blades,
In the cutting step, the base sheet is supplied between the slit roll and the anvil roll under a state in which the position of the cutting edge of the cutter blade matches the position of the convex portion, and a plurality of the long sheets The manufacturing method of the elongate thing for absorbent articles of Claim 1 or 2 which accommodates each elongate cut piece in the said accommodation groove part of the said anvil roll, respectively while forming a shape cut piece.   The width | variety of the said accommodating groove part of the said anvil roll manufactures the elongate thing for absorbent articles of Claim 3 which is reducing gradually as it goes to the bottom part of this accommodating groove part from the surrounding surface side of this anvil roll. Method.   The manufacturing method of the elongate thing for absorbent articles of Claim 3 or 4 which sets the width | variety of the bottom part of the said conveyance groove part of the said conveyance roll more than the width | variety of the bottom part of the said accommodation groove part of the said anvil roll.   The long article for absorbent articles according to any one of claims 1 to 5, further comprising a coating step of coating an adhesive on one surface of the base sheet transported by the transport roll. Manufacturing method.   In the coating step, using a pattern roll having a plurality of flanges extending in the rotation direction on the peripheral surface in the axial direction, and a receiving roll arranged facing the pattern roll, The base sheet is supplied between the pattern roll and the receiving roll while applying the adhesive to the collar, and the adhesive coated on the collar is applied to one surface of the base sheet The manufacturing method of the elongate object for absorbent articles of Claim 6 applied to a surface. The receiving roll has a plurality of transfer convex portions and transfer groove portions extending along the rotation direction on the circumferential surface thereof alternately in the axial direction, and an interval between the adjacent transfer groove portions is the flange portion of the pattern roll. Matches the interval of
The transfer groove part of the receiving roll and the flange part of the pattern roll are arranged so as to fit each other,
The width of the bottom of the transfer groove of the receiving roll is set to be equal to or greater than the width of the flange of the pattern roll;
In the coating step, the base sheet is supplied between the pattern roll and the receiving roll under a state in which the flange portion of the pattern roll matches the position of the transfer groove, The absorbent article according to claim 7, wherein each of the long cut pieces is accommodated in the transfer groove portion, and the adhesive applied to the collar portion is applied to one surface of the base sheet. Method for producing a long product.

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